Pullup ticket #4131 - requested by obache
www/squid3: build fix

Revisions pulled up:
- www/squid3/PLIST                                              1.4
- www/squid3/options.mk                                         1.6

---
   Module Name:	pkgsrc
   Committed By:	obache
   Date:		Sat May  4 06:08:44 UTC 2013

   Modified Files:
   	pkgsrc/www/squid3: PLIST options.mk

   Log Message:
   enabled file_userip external acl helper require more tweak.
   related to PR pkg/47784